The method of uploading Tik Tok photos on OPPO mobile phone is as follows:

1. First, enter the Tik Tok application. You can see that there is a "+"button below. Click this button, as shown in the figure below:

2. Click to enter, and there is an upload button in the lower right corner. Click Upload, as shown below:

3. After clicking Upload, the photos in your mobile phone will appear. Select the photos to upload. You can upload one or more photos. After selecting, click Next, as shown in the following figure:

4. After clicking Upload, you will see a "Next" click in the lower right corner, as shown in the following figure:

5. After entering, the following interface will appear, and then click the publish button at the bottom of the screen, which means that you have published the photos to Tik Tok.